<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png">
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.mobile"
          placeholder="请输入手机号"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button class="loginBtn" :loading="loading" type="primary" style="width:100%;margin-bottom:30px;border: 1px rgba(7, 193, 96) solid" @click.native.prevent="handleLogin">登录</el-button>

      <div class="tips">
        <span style="margin-right:20px;">账号: 13800000002</span>
        <span> 密码: 123456</span>
      </div>

    </el-form>
  </div>
</template>

<script>
import { validMobile } from '@/utils/validate' // 校验格式的文件
import { mapActions } from 'vuex'
// 这是使用辅助函数的形式调用actions
// 原始形式触发actions 需要import导入store运行实例
// this.$store.dispatch('user/signIn',参数)
// 这个项目的特殊就是开启了子模块的spacename 引用指定子模块的方法时需要加上子模块名

export default {
  name: 'Login',
  data() {
    const validateMobile = (rule, value, callback) => {
      if (validMobile(value)) { // validMobile函数 return出正则验证的结果为布尔值
        callback()
      } else {
        callback(new Error('手机格式不正确'))
      }
    }

    return {
      loginForm: {
        mobile: '13800000001',
        password: '123456'
      },
      loginRules: {
        mobile: [{
          required: true,
          trigger: 'blur',
          message: '手机号不能为空'
        }, {
          validator: validateMobile,
          // validator: (rule, value, callback){}
          trigger: 'blur'
        }],

        password: [{
          required: true,
          trigger: 'blur',
          message: '密码不能为空'
        }, {
          min: 6,
          max: 16,
          message: '密码长度为6~16位',
          trigger: 'blur'
        }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },

  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },

  methods: {
    // singIn方法封装了登录的请求 在点击登录或者回车时候调用这个方法
    ...mapActions(['user/signIn']), // 通过辅助函数的形式引入子模块的signIn方法 由于子模块设置了spacename属性，所以访问需要加上路径user/

    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },

    // 点击“登录” 或者按下回车键时触发
    handleLogin() {
      // this.$store.dispatch
      // ref不仅可以获取元素的dom对象  还可以作用到组件<el-form></el-form>上的的时候可以获取到组件的实例 也就是this
      // 简单的说就是可以获取到element-ui中form表单的内置api方法
      this.$refs.loginForm.validate(async isOk => {
        if (isOk) {
          try {
            this.loading = true

            // 表单的手动校验通过 接下来调用action 从登录页跳转到主页
            // this['user/signIn']只是得到了方法 调用还需要接上()  ()内需要传入参数 看user.js中登录请求接口需要传什么参数 需要mobile和password键值对
            await this['user/signIn'](this.loginForm) // 这个loginForm是data(){return {loginForm:{mobile:"",password:""}}}
            this.$router.push('/')
          } catch (err) {
            console.log(err)
          }
          this.loading = false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray: green;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  background-image: url('~@/assets/common/popo.jpg');
  background-position: center;
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }
// 7, 193, 96
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
  .loginBtn {
  background:  rgba(7, 193, 96);
  height: 64px;
  line-height: 32px;
  font-size: 24px;
}
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
